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Javascript regex validate password string (escaping punctuations)

I am trying to validate a password string with javascript and need some help with a regex. I have tried some tutorials, but I think I have some problems understanding how to escape quantifiers and/or metacharacters.
I want to make sure that the password string only contains one or more (max 32) characters from the following spans:
"abcdefghijklmnopqrstuvwxyz"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"012345678901234567890123456789"
"!##%&/(){}[]=?+*^~-_.:,;"
The first three spans are pretty easy, but I can't figure out the last one. Basically my script looks something like this:
var password = "user_input_password";
if (/^[A-Za-z0-9!##$%...]{1,32}$/.test(password)) {
document.write('OK');
} else {
document.write('Not OK');
}
Any help or input is highly appreciated, thanks!

In general, you can escape a meta-character using a backslash \; however, inside a character class, the only ones you have to escape are ] , \ and - (the ^ only has a meaning at the very beginning). Something like [\w!##%&/(){}[\]=?+*^~\-.:,;] will do what you want.
The \w is equal to [A-Za-z0-9_].
So the full test would be something like:
/^[\w!##%&/(){}[\]=?+*^~\-.:,;]{1,32}$/.test(password)

/^[A-Za-z0-9!##%&\/(){}\[\]=?+*^~\-_\.:,;]{1,32}$/

You can also match all characters that are not considered white space (space, newline, tab)
/^[^\s]{1,32}$/.test(password);
To exclude quotes as well (I didn't see them in your example) you can add those in:
/^[^\s'"]{1,32}$/.test(password);

Find uppercase substrings and wrap with acronym tags

For example replace the string Yangomo, Congo, DRC with Yangomo, Congo, <acronym>DRC</acronym>. There may potentially be mulitple uppercase substings in each string. I assume some form of regex?
Thanks.

Well, a really simple one might be:
var replaced = original.replace(/\b([A-Z]+)\b/g, '<acronym>$1</acronym>');
Doing this sort of thing always has complications, however; it depends on the source material. (The "\b" thing matches word boundaries, and is an invaluable trick for all sorts of occasions.)
edit — insightful user Buh Buh points out that it might be nice to only affect strings with more than two characters, which would look like /\b([A-Z]{2,})\b/.

Personally I would use PHP to explode the string, use a regex to find all uppercase letters /[A-Z]+/ and then use PHP to insert the tags (using str_replace).

Regex wordwrap with UTF8 characters in JS

i've already read all tha articles in here wich touch a similar problem but still don't get any solution working. In my case i wanna wrap each word of a string with a span. The words contain special characters like 'äüö...'
What i am doing at the moment is:
var textWrap = text.replace(/\b([a-zA-Z0-9ßÄÖÜäöüÑñÉéÈèÁáÀàÂâŶĈĉĜĝŷÊêÔôÛûŴŵ-]+)\b/g, "<span>$1</span>");
But what happens is that if the äüñ or whatever NON-Ascii character is at the end or at the beginning it also acts like a boundary. Being within a word these characters do't act as a boundary.
'Ärmelkanal' becomes Ä<span>rmelkanal</span> but should be <span>Ärmelkanal</span>
'Käse'works fine... becomes <span>Käse</span>
'diré' becomes <span>dir</span>é but should be <span>diré</span>
Any advice would be very appreciated. I need to do that on clientside :-( BTW did i mention that i hate regular expressions ;-)
Thank You very much!

The problem is that JavaScript recognizes word boundaries only before/after ASCII letters (and numbers/underscore). Just drop the \b anchors and it should work.
result = subject.replace(/[a-zA-Z0-9ßÄÖÜäöüÑñÉéÈèÁáÀàÂâŶĈĉĜĝŷÊêÔôÛûŴŵ-]+/g, "<span>$&</span>");

Regex to match part of a string

Regex fun again...
Take for example http://something.com/en/page
I want to test for an exact match on /en/ including the forward slashes, otherwise it could match 'en' from other parts of the string.
I'm sure this is easy, for someone other than me!
EDIT:
I'm using it for a string.match() in javascript

Well it really depends on what programming language will be executing the regex, but the actual regex is simply
/en/
For .Net the following code works properly:
string url = "http://something.com/en/page";
bool MatchFound = Regex.Match(url, "/en/").Success;
Here is the JavaScript version:
var url = 'http://something.com/en/page';
if (url.match(/\/en\//)) {
alert('match found');
}
else {
alert('no match');
}
DUH
Thank you to Welbog and Chris Ballance to making what should have been the most obvious point. This does not require Regular Expressions to solve. It simply is a contains statement. Regex should only be used where it is needed and that should have been my first consideration and not the last.

If you're trying to match /en/ specifically, you don't need a regular expression at all. Just use your language's equivalent of contains to test for that substring.
If you're trying to match any two-letter part of the URL between two slashes, you need an expression like this:
/../
If you want to capture the two-letter code, enclose the periods in parentheses:
/(..)/
Depending on your language, you may need to escape the slashes:
\/..\/
\/(..)\/
And if you want to make sure you match letters instead of any character (including numbers and symbols), you might want to use an expression like this instead:
/[a-z]{2}/
Which will be recognized by most regex variations.
Again, you can escape the slashes and add a capturing group this way:
\/([a-z]{2})\/
And if you don't need to escape them:
/([a-z]{2})/
This expression will match any string in the form /xy/ where x and y are letters. So it will match /en/, /fr/, /de/, etc.
In JavaScript, you'll need the escaped version: \/([a-z]{2})\/.

You may need to escape the forward-slashes...
/\/en\//

Any reason /en/ would not work?

/\/en\// or perhaps /http\w*:\/\/[^\/]*\/en\//

You don't need a regex for this:
location.pathname.substr(0, 4) === "/en/"
Of course, if you insist on using a regex, use this:
/^\/en\//.test(location.pathname)

Javascript regular expression to strip out content between double quotes

I'm looking for a javascript regex that will remove all content wrapped in quotes(and the qoutes too), in a string that is the outlook format for listing email addresses. Take a look at the sample below, I am a regex tard and really need some help with this one, any help/resources would be appreciated!
"Bill'sRestauraunt"BillsRestauraunt#comcast.net,"Rob&Julie"robjules#ntelos.net,"Foo&Bar"foobar#cstone.net

Assuming no nested quotes:
mystring.replace(/"[^"]*"/g, '')

Try this regular expression:
/(?:"(?:[^"\\]+|\\(?:\\\\)*.)*"|'(?:[^'\\]+|\\(?:\\\\)*.)*')/g

Here's a regex I use to find and decompose the quoted strings within a paragraph. It also isolates several attendant tokens, especially adjacent whitespace. You can string together whichever parts you want.
var re = new RegExp(/([^\s\(]?)"(\s*)([^\\]*?(\\.[^\\]*)*)(\s*)("|\n\n)([^\s\)\.\,;]?)/g);